Bitcoin developers looking to expand the blockchain’s decentralized finance (DeFi) capabilities are likely to be considering zero-knowledge (ZK) proofs, functionality that’s not currently available and which require a so-called soft fork, or new version of the software, to introduce them.
That’s a problem, according Edan Yago, a Bitcoin veteran of over a decade and core contributor to smart contract operating system BitcoinOS (BOS).
„Forking a blockchain, especially one with $2 trillion worth of value on it, is like open-heart surgery,” Yago told CoinDesk in an interview „Hard forks are obviously much more problematic, but I think introducing any kind of fork is fraught.”
A fork is a change to a blockchain’s code that necessitates a divergence at a certain point onto a separate path. Forks can be „soft,” meaning older versions can still interact with the new one, or „hard”, which render older versions incompatible and require all users to upgrade their software.
ZK proofs are a cryptog
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